using System;
using UnityEngine;

namespace Game.WorldGen
{
    public enum FeatureType
    {
        /// <summary>Additive cone/peak. Optional ridged roughness for a rocky look.</summary>
        Mountain,

        /// <summary>Flat-topped mesa: blends the terrain toward a target height with smooth edges.</summary>
        Plateau,

        /// <summary>Cone rising to a rim, then a central crater depression (ARK-style volcano).</summary>
        Volcano
    }

    /// <summary>
    /// A hand-placed relief feature stamped onto the procedural base in world space.
    /// Because it is sampled in world space it spans tile boundaries seamlessly.
    /// </summary>
    [Serializable]
    public class TerrainFeature
    {
        public string name = "Feature";
        public FeatureType type = FeatureType.Mountain;

        [Tooltip("World position in meters (X, Z), measured from the world origin corner.")]
        public Vector2 worldPosition = new Vector2(3000f, 3000f);

        [Tooltip("Radius of influence in meters.")]
        public float radiusMeters = 500f;

        [Range(0f, 1f), Tooltip("Peak/target height as a fraction of the world's max height.")]
        public float strength01 = 0.4f;

        [Range(0.5f, 5f), Tooltip("Higher = steeper, more pointed falloff.")]
        public float falloffPower = 2f;

        [Range(0f, 1f), Tooltip("Mountain only: amount of ridged roughness mixed into the slopes.")]
        public float roughness = 0.3f;

        [Range(0.05f, 0.9f), Tooltip("Volcano only: crater radius as a fraction of the feature radius.")]
        public float craterRadius01 = 0.35f;

        [Range(0f, 1f), Tooltip("Volcano only: crater depth below the rim, as a fraction of strength.")]
        public float craterDepth01 = 0.5f;
    }
}